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Journal Publications

2020

A. Pourkazemi and J. Stiens, “Error Assessment and Mitigation Methods in Transient Radar Method,” Sensors, vol. 20, no. 263, pp. 1-17, Jan. 2020.

A. Pourkazemi, A. Gutierrez, I. Mohout, E. Smets, R. Wise, J. Stiens and M. L.N.G. Malbrain, “A concise overview of non-invasive intra-abdominal pressure measurement techniques: from bench to bedside,” Journal of Clinical Monitoring and Computing, 2020.

C. Chen, J. Stiens, T. Hauffman, S. Pletincx and R. Inocente Revilla Castillo, “Exploration and mechanism analysis: The maximum ultraviolet luminescence limits of ZnO/few-layer graphene composite films,” Applied Surface Science, vol. 503, pp. 1-9, Feb. 2020.

2019

C. Chen and J. Stiens, “A novel preparation method for uniform large-area graphene films on Ni@Cu substrate,” Materials Today Communications, vol. 2019, pp. 31, Aug. 2019.

C. Chen, G. He, T. Hauffman, S. Pletincx, C. De Tandt and J. Stiens, “Growth mechanism of novelty scaly CNFs@ZnO nanofibers structure and its photoluminescence property,” Applied Surface Science, vol. 491, no. 0169-4332, pp. 75-82, Oct. 2019.

C. Chen, G. He, Z. Zhang, J. Yan, L. Kou, T. Hauffman, S. Pletincx, W. Zhao, J. Yun, C. De Tandt and J. Stiens, “Growth mechanism of novel scaly CNFs@ZnO nanofibers structure and its photoluminescence property,” Applied Surface Science, vol. 491, pp. 75-82, Oct. 2019.

E. Cristofani, B. Lauwens, V. Marijke, J. Stiens and N. Deligiannis, “Online Sequential Compressed Sensing with Multiple Information for Through-the-Wall Radar Imaging,” IEEE Sensors Journal, vol. 19, no. 11, pp. 4138-4148, 2019.

G. He, Y. Zhang, C. De Tandt and J. Stiens, “A Fully Electronically Tunable Millimeter Wave lab-in-waveguide Nano-Fluidic Sensor,” Journal of Physics D: Applied Physics, vol. 53, no. 9, Dec. 2019.

2018

E. Cristofani, H. Van Luong, J. Stiens and N. Deligiannis, “Compressed sensing mm-wave SAR for non-destructive testing applications using multiple weighted side information,” Sensors (Switzerland), vol. 18, no. 6, pp. 17, Jun. 2018.

E. Cristofani, S. Lambot, J. Stiens and N. Deligiannis, “Random Subsampling and Data Preconditioning for Ground Penetrating Radars,” IEEE Access, vol. 6, no. 04506, pp. 26866-26880, May. 2018.

G. He and J. Stiens, “Enhanced terahertz absorption of graphene composite integrated with double circular metal ring array,” Plasmonics, vol. 13, no. 5, pp. 1705-1710, Oct. 2018.

G. He, J. Stiens, W. Shao and B. Wang, “Recursively Convolutional CFS-PML in Three-dimensional Laguerre-FDTD Scheme for Arbitrary Media,” IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 5, pp. 2070-2079, May. 2018.

G. Pandey, W. Vandermeiren, V. Matvejev and J. Stiens, “Contactless monitoring of food drying and freezing processes with millimeter waves,” Journal of Food Engineering, vol. 226, pp. 1-8, Jun. 2018.

S. Avram, A. Puia, A. Maria Udrea, D. Mihailescu, M. Alexandra Mernea, A. Dinischiotu, F. Oancea and J. Stiens, “Natural compounds therapeutic features in brain disorders by experimental, bioinformatics and cheminformatics methods,” Current Medicinal Chemistry, Oct. 2018.

S. Moraes Da Silva Junior, J. Stiens, S. Moshkalev, J. Swart, R. Lacerda de Orio, V. Matvejev, Y. Zhang, W. Vandermeiren and C. De Tandt, “Microfluidic devices on glass for liquid mixtures concentration with coupled THz sensor,” Journal of Integrated Circuits and Systems, vol. 13, no. 2, pp. 1-5, Aug. 2018.

V. Van Eeghem, A. El Arfani, A. Arta, L. Walrave, A. Pourkazemi, E. Mihai Bentea, T. Demuyser, I. Smolders and J. Stiens, “Erratum to "Selective Changes in Locomotor Activity in Mice Due to Low-intensity Microwaves Amplitude Modulated in the EEG Spectral Domain" [Neuroscience 359 (2017) 40-48],” Neuroscience, vol. 394, pp. 316-316, Dec. 2018.

2017

A. Pourkazemi, J. Stiens, M. Becquaert and M. Vandewal, “Transient Radar Method: Novel Illumination and Blind Electromagnetic/Geometrical Parameter Extraction Technique for Multilayer Structures,” IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 6, pp. 2171-2184, Mar. 2017.

O. A. Barsan, G. He, H. Alkorre, J. Stiens and G. de With, “Identifying anisotropy in seemingly random CNT networks using terahertz techniques,” Composites Science and Technology, vol. 151, pp. 10-15, Oct. 2017.

S. Moraes Da Silva Junior, J. Stiens, S. Moshkalev, J. Willibrordus Swart, V. Matvejev, Y. Zhang and C. De Tandt, “Subterahertz sensor in microfluidic devices for on-line determination and control of ethanol concentration,” Journal of Vacuum Science & Technology B, vol. 35, no. 6, pp. 8, Nov. 2017.

V. Van Eeghem, A. El Arfani, A. Anthoula, L. Walrave, A. Pourkazemi, E. Mihai Bentea, T. Demuyser, I. Smolders and J. Stiens, “Selective changes in locomotor activity in mice due to low-intensity microwaves amplitude modulated in the EEG spectral domain,” Neuroscience, vol. 359, pp. 40-48, Sep. 2017.

Y. Zhang, S. Declerck, D. Mangelings, G. He, V. Matvejev, Y. Vander Heyden and J. Stiens, “A label-free detector for liquid chromatography systems using mm-wave technology: First proof of concept,” Journal of Chromatography A, vol. 1516, pp. 79-88, Sep. 2017.

2016

G. Shkerdin, G. He, H. Alkorre and J. Stiens, “Modulation of TE Propagation Modes in Rectangular Metal Waveguide with Integrated Graphene Structure in the Sub-Terahertz Frequency Range,” Journal of Optics, vol. 19, no. 1, pp. 18, Dec. 2016.

G. Shkerdin, H. Alkorre, G. He and J. Stiens, “Modified TE modes of metal waveguide with integrated graphene structure in the sub-terahertz frequency range,” IET Microwaves, Antennas & Propagation, vol. 10, no. 6, pp. 692–699, Mar. 2016.

2015

B. De Cock, A. Van Eeckhaut, J. Stiens, D. Mangelings and Y. Vander Heyden, “Inter-instrumental method transfer of a capillary electrophoretic separation of angiotensin II and five derivatives: Evaluation and update of earlier developed guidelines,” Electrophoresis, vol. 36, no. 21-22, pp. 2658-2664, 2015.

B. Zhu, G. He, J. Stiens, J. Van Erps, W. Ranson, C. De Tandt, H. Thienpont and R. Vounckx, “Resolution analysis of a polymethylmethacrylate tapered probe in near-field terahertz imaging,” Applied Computational Electromagnetics Society Journal, vol. 30, no. 1, pp. 30-41, Jan. 2015.

G. Shkerdin, H. Alkorre, J. Stiens and R. Vounckx, “Modified TM & TE waveguide modes and reflectivity by graphene layer in coupled- graphene-metal multilayer structure in sub-Terahertz frequency,” Journal of Optics, vol. 17, no. 5, pp. 55006-55016, Apr. 2015.

H. Alkorre, G. Shkerdin, J. Stiens and R. Vounckx, “Coupled TM surface plasmon features of graphene-metal layered structure in the sub-THz frequency range,” Journal of Optics, vol. 17, no. 4, pp. 45003-45010, Mar. 2015.

K. De Pauw, B. Roelands, K. Knaepen, M. Polfliet, J. Stiens and R. Meeusen, “Effects of caffeine and maltodextrin mouth rinsing on P300, brain imaging, and cognitive performance,” Journal of Applied Physiology, vol. 118, no. 6, pp. 776-782, 2015.

2014

B. De Cock, A. Borsuk, B. Dejaegher, J. Stiens, D. Mangelings and Y. Vander Heyden, “Inter-instrumental method transfer of chiral capillary electrophoretic methods using robustness test information,” Journal of Chromatography A, vol. 1353, pp. 148-159, 2014.

B. De Cock, B. Dejaegher, J. Stiens, D. Mangelings and Y. Vander Heyden, “Precision evaluation of chiral capillary electrophoretic methods in the context of inter-instrumental transfer: constant current versus constant voltage application,” Journal of Chromatography A, vol. 1353, pp. 140-147, 2014.

G. Shkerdin, S. Rabbaa, J. Stiens and R. Vounckx, “Influence of electron scattering on phonon–plasmon coupled modes dispersion and free-electron absorption in n-doped GaN semiconductors at mid-IR wavelengths,” physica status solidi (b), vol. 4, no. 251, pp. 882-891, Apr. 2014.

H. Alkorre, G. Shkerdin, J. Stiens, Y. Trabelsi and R. Vounckx, “Effective Fermi Level Modulation of Coupled Graphene-Metal Surface Plasmon Polaritons at Sub-THz Frequency Range,” International Journal of Microwave and Optical Technology, vol. 9, no. 6, pp. 453-459, Nov. 2014.

V. Matvejev, Y. Zhang and J. Stiens, “High performance integrated terahertz sensor for detection of biomolecular processes in solution,” IET Microwaves, Antennas & Propagation, vol. 8, no. 6, pp. 394-400, Apr. 2014.

W. Vandermeiren, J. Stiens, G. Shkerdin, C. De Tandt and R. Vounckx, “Normal incidence infrared modulator based on single quantum well intersubband transitions,” Journal of Physics D: Applied Physics, vol. 47, pp. 7, 2014.

2012

B. Zhu, J. Stiens, V. Matvejev and R. Vounckx, “INEXPENSIVE AND EASY FABRICATION OF MULTI-MODE TAPERED DIELECTRIC CIRCULAR PROBES AT MILLIMETER WAVE FREQUENCIES,” Progress in Electromagnetics Research, vol. 126, pp. 237-254, Mar. 2012.

G. Shkerdin, S. Rabbaa, J. Stiens and R. Vounckx, “Free electron absorption in n-doped GaN semiconductors at mid-IR wavelengths in the strong phonon-plasmon coupling regime,” Journal of Physics D: Applied Physics, vol. 45, no. 49, pp. 1-11, Nov. 2012.

S. Rabbaa and J. Stiens, “Validation of a triangular quantum well model for GaN-based HEMTs used in pH and dipole moment sensing,” Journal of Physics D: Applied Physics, vol. 45, no. 47, pp. 9, Oct. 2012.

V. Matvejev, J. Stiens and M. Zizi, “Hydration Shell Parameters of Aqueous Alcohols: THz Excess Absorption and Packing Density,” Journal of Physical Chemistry B, vol. 116, pp. 14071-14077, Nov. 2012.

W. Vandermeiren, J. Stiens, G. Shkerdin and R. Vounckx, “Theoretical analysis of partial-spatial Q-switching dynamics using a two-level CO2 laser model,” IEEE Journal of Quantum Electronics, vol. 48, pp. 447-453, 2012.

2011

A. Elhawil, J. Stiens, C. De Tandt, W. Ranson and R. Vounckx, “Thin-film sensing using circular open ring resonators at mm-wave frequencies,” Applied Physics A: Materials Science & Processing, vol. 103, pp. 623-626, Jan. 2011.

S. Rabbaa and J. Stiens, “Charge density and plasmon modes in a triangular quantum well model for doped and undoped gated AlGaN/GaN HEMTs,” Journal of Physics D: Applied Physics, vol. 44, pp. 1-7, Jul. 2011.

V. Matvejev, C. De Tandt, W. Ranson, J. Stiens, R. Vounckx and D. Mangelings, “Integrated Waveguide Structure for Highly Sensitive THz Spectroscopy of Nano-liter liquids in Capillary Tubes,” Progress in Electromagnetics Research, vol. 121, pp. 89-101, Oct. 2011.

W. Vandermeiren, J. Stiens, G. Shkerdin, C. De Tandt and R. Vounckx, “Lock-in thermo-electric detector arrays: thermal cross-talk prediction by non-linear model,” Journal of Physics D: Applied Physics, vol. 44, pp. 1-6, Feb. 2011.

2010

A. Elhawil, J. Stiens, C. De Tandt, W. Ranson and R. Vounckx, “Equivalent Circuit Model of Single Circular Open-ring Resonators,” IEEE Journal of Selected Topics in Quantum Electronics, vol. 16, no. 380-385, pp. 380-385, Mar. 2010.

A. Elhawil, C. Neve, B. Olbrechts, I. Huynen, J. Raskin, G. Poesen, J. Stiens and R. Vounckx, “Contactless monitoring of Si substrate permittivity and resistivity from microwave to millimeter wave frequencies,” Microwave and Optical Technology Letters, vol. 52, no. 11, pp. 2500-2505, Nov. 2010.

S. Faiz-Ul Islam, J. Stiens, G. Poesen, D. Jaeger, C. De Tandt, W. Ranson, W. De Raedt and R. Vounckx, “Effect of inter-element spacings variation on the performance of linear grounded frequency selective surface arrays in W-band,” Microwave and Optical Technology Letters, vol. 52, no. 1, pp. 155-160, 2010.

S. Islam, J. Stiens, G. Poesen and R. Vounckx, “Simulation and Experimental verification of W-band Finite Frequency Selective Surfaces on Infinite Background with 3D full Wave Solver NSPWMLFMA,” Progress in Electromagnetics Research, vol. 101, pp. 189-202, Feb. 2010.

S. Islam, J. Stiens, G. Poesen, I. Jäger and R. Vounckx, “"Periodicity Perturbed Grounded Frequency Selective Surface Arrays as Millimeter Wave Random Phase Coherence Destroying Diffusers",” Journal of Infrared, Millimeter and THz waves, vol. 31, pp. 641-648, Mar. 2010.

2009

A. Elhawil, G. Koers, L. Zhang, J. Stiens and R. Vounckx, “Comparison between two optimization algorithms to compute the complex permittivity of dielectric multilayer structures using a free space quasi-optical method in W-band,” IET Science, Measurement & Technology, vol. 3, no. 1, pp. 13-21, Jan. 2009.

A. Elhawil, G. Koers, L. Zhang, J. Stiens and R. Vounckx, “Reliable Method for Material Characterisation using a Quasi-Optical Free-Space Measurement in the W-Band,” IET Science, Measurement & Technology, vol. 3, no. 1, pp. 39-50, Jan. 2009.

L. Zhang, G. Koers and J. Stiens, “Interference artifact reduction by multiangle illumination in millimeter wave images: Model and experimental validation,” Microwave and Optical Technology Letters, vol. 51, no. 8, pp. 1845-1848, May. 2009.

S. Islam, J. Stiens, G. Poesen, R. Vounckx and E. Walter, “W-band Characterization of Grounded Frequency Selective Surface Arrays Composed of Non- equal slot length sub-arrays, accepted for publication,” International Journal of Microwave and Science and Technology, vol. 2009, pp. 1-7, Dec. 2009.

S. Islam, J. Stiens, G. Poesen, I. Jäger and R. Vounckx, “Grounded Frequency Selective Surface Array Characterization for Quasi Optical Phase Shifter at W-band,” International Journal on Information and Communication Technologies ( IJICT ), vol. 2, pp. 240-244, Apr. 2009.

S. Islam, J. Stiens, I. Jäger, G. Poesen and R. Vounckx, “Implementation of Dynamic Hadamard Diffuser as a Frequency Selective Surface for W-band Active Millimeter Wave Imaging,” Microwave and Optical Technology Letters, vol. 51, no. 6, pp. 1440-1445, Jun. 2009.

2008

G. Koers, I. Ocket, Q. Feng, V. Tavakol, I. Jäger, B. Nauwelaers and J. Stiens, “Study of Active Millimeter Wave Image Speckle Reduction by Hadamard Phase Pattern Illumination,” Journal of the Optical Society of America A: Optics and Image Science, and Vision, vol. 25, pp. 312-317, Feb. 2008.

I. Jäger, J. Stiens, L. Zhang, S. Islam, G. Koers and R. Vounckx, “Comparison of speckle reduction diversity tools for active millimeter-wave imaging,” Journal of the Optical Society of America A: Optics and Image Science, and Vision, vol. 25, no. 7, pp. 1716-1721, Jul. 2008.

L. Zhang, J. Stiens, A. Elhawil and R. Vounckx, “Multispectral illumination and image processing techniques for active millimeter-wave concealed object detection,” Applied Optics, vol. 47, no. 34, pp. 6357-6365, Dec. 2008.

S. Islam, J. Stiens, G. Poesen, I. Jäger and R. Vounckx, “Passive Frequency Selective Surface Array as a Diffuser for Destroying Millimeter Wave Coherence,” Active and Passive Electronic Components, pp. 6, 2008.

S. Van Den Bulcke, L. Zhang, A. Franchois, J. Geffrin and J. Stiens, “Plane Wave and Gaussian Beam Scattering by Long Dielectric Cylinders: 2.5D Simulations versus Measurements,” International Journal of Infrared and Millimeter Waves, no. 11, pp. 1038-1047, Nov. 2008.

2007

D. Van Nieuwenhove, W. van der Tempel, R. Grootjans, J. Stiens and M. Kuijk, “Photonic Demodulator with Sensitivity Control,” IEEE Sensors Journal, vol. 7, pp. 317-318, Mar. 2007.

G. Poesen, J. Stiens, M. Vanden Bossche and R. Vounckx, “Time-dependent characterization of an optically modulated CPW line characterized with a large-signal network analyzer,” Microwave and Optical Technology Letters, vol. 49, pp. 3124-3128, Sep. 2007.

G. Poesen, G. Koers, J. Stiens, G. Carchon, W. De Raedt and R. Vounckx, “Photo-induced millimeter wave losses in coplanar waveguide on high resistivity Si,” Microwave and Optical Technology Letters, vol. 49, pp. 808-810, Apr. 2007.

I. Jäger, D. Kalinowski, J. Stiens, R. Vounckx, A. Stoehr and D. Jaeger, “Millimeter wave signal generation using resonant tunneling diodes NLTL-resonat,” Microwave and Optical Technology Letters, vol. 49, pp. 2907-2909, Dec. 2007.

I. Jäger, L. Zhang, J. Stiens, H. Sahli and R. Vounckx, “Millimeter wave inspection of concealed objects, Microwave and Optical Technology Letters,” Microwave and Optical Technology Letters, vol. 49, pp. 2733-2737, Nov. 2007.

I. Jäger, L. Zhang, J. Stiens, H. Sahli and R. Vounckx, “Millimeter wave inspection of concealed objects,” Microwave and Optical Technology Letters, vol. 49, pp. 2733-2737, 2007.

V. Kotov, J. Stiens, G. Shkerdin, W. Vandermeiren and R. Vounckx, “Time dependence of CO2 laser pulses recorded in the mixed detector regime of the photon drag and Seebeck effects in n-doped GaAs,” Journal of Applied Physics, vol. 102, pp. 64509-64509, Sep. 2007.

V. Kotov, G. Shkerdin, D. Shkerdin, A. Voronko, S. Tikhomirov, J. Stiens, R. Vounckx and W. Vandermeiren, “Fourier processing of the speckle structure of the optical field in the process of multiphonon Bragg diffraction,” Journal of Optical Technology, vol. 74, pp. 84-86, Feb. 2007.

2006

G. Koers, J. Stiens and R. Vounckx, “Scalar Calibration of Quasi-Optical Reflection Measurements,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, pp. 3121-3126, Jul. 2006.

G. Shkerdin, J. Stiens, W. Vandermeiren, V. Kotov, C. De Tandt, G. Borghs and R. Vounckx, “CO2 laser induced temperature profiles in n-GaAs: an analytical model probed with the Seebeck effect,” Journal of Applied Physics, vol. 100, pp. 11-113120, Dec. 2006.

I. Jäger, J. Stiens, G. Koers, G. Poesen and R. Vounckx, “Hadamard speckle reduction for millimeter wave imaging,” Microwave and Optical Technology Letters, vol. 48, no. 9, pp. 1722-1725, Jun. 2006.

2005

J. Stiens, “Doorheen materialen kijken met millimetergolven is voortaan mogelijk,” WTCM Techniline, 2005.

2004

G. Shkerdin, J. Stiens and R. Vounckx, “Optimized attenuated total reflection configuration for free carrier induced optical nonlinearities in n-GaAs,” Semiconductor Science and Technology, vol. 19, no. 3, pp. 291-298, 2004.

2003

G. Shkerdin, J. Stiens and R. Vounckx, “Nonlinear and bistable reflection minima at lambda=10.6 mu m in an attenuated total reflection configuration with a highly doped n-GaAs Film,” Applied Optics, vol. 42, no. 6, pp. 1132-1139, 2003.

G. Shkerdin, J. Stiens and R. Vounckx, “The relationship between reflectivity minima and eigenmodes in multi-layer structures,” Journal of Optics, no. 4, pp. 396, 2003.

2002

J. Stiens, F. Devisch and M. Kuijk, “Power Saving with Resonant PMLCD driving,” Journal of the Society for Information Display, vol. 10, no. 4, pp. 375-380, 2002.

G. Shkerdin, J. Stiens and R. Vounckx, “Nonlinear and bistable reflection minima in an ATR-configuration with a highly doped n-GaAs film at 10.6 micron,” Applied Optics, vol. 42, no. 6, pp. 1-8, 2002.

G. Shkerdin, J. Stiens and R. Vounckx, “X-valley influence on hot free electron absorption and nonlinearities at 10.6mm in highly doped GaAs,” European Physical Journal - Applied Physics, no. 1, pp. 37, 2002.

G. Shkerdin, J. Stiens and R. Vounckx, “X-valley influence on hot frre electron absorption and nonlinearities at 10.6 micron in highly doped GaAs,” Eur. Phys. J.- Appl. Phys., no. 1, pp. 38, 2002.

V. Kotov, J. Stiens, G. Shkerdin, W. Ranson, C. De Tandt, G. Borghs and R. Vounckx, “Impact of deformation potential scattering on free-carrier induced optical nonlinearities: An experimental study in GaAs,” Journ. Appl. Phys., no. 7, pp. 3997, 2002.

2001

G. Shkerdin, J. Stiens and R. Vounckx, “Influence of leaky waves on free-carrier induced nonlinear reflection properties of highly doped n-GaAs layer at medium IR-wavelengths,” Journal of Optics A: Pure and Applied Optics, no. 6, pp. 499, 2001.

J. Genoe, D. Coppée, J. Stiens, R. Vounckx and M. Kuijk, “Calculation of the current response of the Spatially Modulated Light CMOS detector,” IEEE Trans. Elec. Devs., vol. 48, no. 9, pp. 1892-1902, Sep. 2001.

V. Kotov, J. Stiens, G. Shkerdin and R. Vounckx, “Cascade Acousto-optic frequency shift of light,” Journal of Optics A: Pure and Applied Optics, no. 6, pp. 520, 2001.

2000

G. Shkerdin, J. Stiens and R. Vounckx, “A Multi-Valley Model for Hot Free-Electron Nonlinearities at 10.6µm in Highly Doped n-GaAs,” European Physical Journal - Applied Physics, no. 3, pp. 180, 2000.

1999

J. Stiens, W. Ranson, C. De Tandt, V. Kotov, G. Shkerdin, G. Borghs, P. Muys and R. Vounckx, “Etched semiconductor promises high rep rates,” Opto & Laser Europe, 1999.

D. Coppée, W. Pan, J. Stiens, R. Vounckx and M. Kuijk, “Experimental Study of the Spatially-Modulated Light Detector,” Solid-State-Electronics, no. 3, pp. 613, 1999.

G. Shkerdin, J. Stiens and R. Vounckx, “Comparative study of the intra- and intervalley contributions to the free-carrier induced optical nonlinearity in n-GaAs,” J. Appl. Phys., vol. 85, no. 7, pp. 3807-3818, 1999.

G. Shkerdin, J. Stiens and R. Vounckx, “Hot Free-Electron Absorption in Non-parabolic III-V Semiconductors at mid-IR wavelengths,” Journal of Applied Physics, vol. 85, no. 7, pp. 3792-3806, 1999.

1997

J. Stiens, R. Vounckx, I. Veretennicoff, A. Voronko and G. Shkerdin, “Slab plasmon polaritons and waveguide modes in four-layer resonant semiconductor waveguides,” J. Appl. Phys., vol. 81, no. 1, pp. 1-10, 1997.

J. Stiens, C. De Tandt, W. Ranson, R. Vounckx and G. Borghs, “Investigation of the depletion-modulation characteristics of low power 10.6 µm IR modulators based on the resonant plasma effect,” IEEE Photonics Technology Letters, no. 6, pp. 772-772, 1997.

J. Stiens, W. Ranson, R. Cottam, C. De Tandt, R. Vounckx, V. Kotov, G. Shkerdin, B. Dhoedt and R. Baets, “World News: Germanium Improves Modulator Efficiency,” Laser Focus World, pp. 1, 1997.

1996

J. Stiens, A. Voronko, G. Shkerdin, V. Kotov and R. Vounckx, “Optical nonlinearity at 10.6 µm based on intervalley transfers in highly doped n-GaAs layers,” Nonlinear Optics : Principles, Materials, Phenomena and Devices, no. 1, pp. 166, 1996.

J. Stiens, W. Ranson, R. Cottam, C. De Tandt, R. Vounckx, V. Kotov, G. Shkerdin, B. Dhoedt and R. Baets, “Experimental Characterisation of Reactive Ion Etched Germanium Diffraction Gratings at 10.6 µm Wavelength,” Appl. Phys. Letters, no. 23, pp. 3455, 1996.

1994

J. Stiens and R. Vounckx, “Calculations of plasma wavelength in highly doped III-V semi-conductor alloys,” J. Appl. Phys., vol. 76, no. 6, pp. 3526-3533, 1994.

J. Stiens, C. De Tandt, W. Ranson, R. Vounckx, P. De Meester and I. Moerman, “Experimental study of an InGaAs-InP resonant plasma waveguide modulator for medium-infrared light,” Applied Physics Letters, vol. 65, no. 18, pp. 2341-2343, 1994.

1991

J. Stiens, M. Kuijk, R. Vounckx and G. Borghs, “New modulator for far-infrared light: integrated mirror optical switch,” Applied Physics Letters, vol. 59, no. 25, pp. 3210-3212, 1991.

Conference Publications

2018

E. Cristofani, O. Mahfoudia, X. Neyt, F. Horlin, N. Deligiannis, J. Stiens and M. Vandewal, “Exploring Side Information for DVB-t-based Passive Radars,” in URSI Benelux Forum 2018, URSI, Jan. 2018, pp. 1.

K. Kalteremidou, A. Pourkazemi, Y. El Idrissi, Y. Morabet, G. He, J. Stiens, L. Pyl and D. Van Hemelrijck, “The combined use of millimetre wave imaging and acoustic emission for the damage investigation of glass fibre reinforced polymer composites,” in 12th European Conference on Non-Destructive Testing, Jun. 2018, pp. 8.

M. Becquaert, E. Cristofani, M. Vandewal, J. Stiens and N. Deligiannis, “Online Sequential Compressed Sensing with Weighted Multiple Side Information for Through the Wall Imaging,” in URSI Benelux Forum 2018, URSI, Jan. 2018, pp. 5.

Z. Manoli, A. Pourkazemi, G. Pandey, J. Stiens and H. Terryn, “Water diffusion mapping in organic coatings on metal substrates: A quasi-optical mm-wave technique Vs. Odd Random Phase Electrochemical Impedance Spectroscopy,” in EUROCORR, Jan. 2018.

2017

A. Pourkazemi, G. Pandey, J. Assaf, P. Bismpas, E. Tsangouri, J. Stiens and D. Angelis, “Combination of Acoustic Emission and Millimeter Wave Spectroscopy techniques to investigate damage on cementitious materials,” in 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures, Brussels: RILEM, Sep. 2017, pp. 6.

E. Cristofani, O. Mahfoudia, M. Becquaert, X. Neyt, F. Horlin, N. Deligiannis, J. Stiens and M. Vandewal, “Compressive Sensing and DVB-T-Based Passive Coherent Location,” in 26th URSI Benelux Forum, URSI, Feb. 2017, pp. 2.

M. Becquaert, E. Cristofani, M. Vandewal, J. Stiens and N. Deligiannis, “Compressed Sensing SAR Through-the-Wall Imaging with Side Information,” in 26th URSI Benelux Forum, URSI, Feb. 2017, pp. 2.

2016

E. Cristofani, G. Pandey, N. Deligiannis and J. Stiens, “Compressed sensing and defect-based dictionaries for characteristics extraction in mm-wave non-destructive testing,” in International Conference on Infrared, Millimeter and Terahertz Wave, IEEE, 2016, pp. 2.

G. He, G. Shkerdin and J. Stiens, “Phase Modulation Properties of Rectangular Metallic Waveguide with Graphene Integrated in Sub-Terahertz Wave Frequency Range,” in IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications 2016�, Piscataway: IEEE, Jul. 2016, pp. 4.

G. Pandey, S. Brebels, L. Dimiccoli, W. Vandermeiren, M. Libois, C. Soens and J. Stiens, “Quasi-optical Mm-wave Sensor System for Contactless Monitoring of Small Samples with Enhanced Performance,” in 41st International Conference on Infrared, Millimeter and Terahertz Wave, IEEE, 2016, pp. 2.

H. Alkorre, J. Stiens, S. M. F. Elkuri, C. De Tandt, G. Shkerdin and S. Karamat, “Characterization of coupled metal-graphene multilayer structure at WR 3.4 frequency band,” in World Symposium on Mechatronics Engineering & Applied Physics, IEEE, 2016, pp. 3.

M. Becquaert, E. Cristofani, G. Pandey, M. Vandewal, J. Stiens and N. Deligiannis, “Compressed sensing mm-wave SAR for non-destructive testing applications using side information,” in 2016 IEEE Radar Conference, RadarConf 2016, IEEE, May. 2016, pp. 5.

S. Rabbaa, J. Stiens, W. Vandermeiren and G. Shkerdin, “GaAs-based grating system for Q-switching on the basis of IMOS structure,” in Semiconductor Electronics (ICSE), IEEE, Sep. 2016, pp. 4.

2015

J. Stiens, V. Matvejev, Y. Zhang, G. He, C. De Tandt, D. Maes, D. Mangelings, S. Declerck, D. Mihailescu and M. Alexandra Mernea, “Change detection in (bio)chemical liquids with ultrasensitive label-free and immobilization-free sensors operating the GHz-THz range,” in 4th International Symposium on Sensor Science, Basel, Switzerland: MDPI AG, Jul. 2015.

A. Pourkazemi, J. Stiens, M. Becquaert and M. Vandewal, “Novel illumination and parameter extraction technique for the characterization of multilayer structures in the GHz range with deep sub-wavelength resolution,” in Novel illumination and parameter extraction technique for the characterization of multilayer structures in the GHz range with deep sub-wavelength resolution, Apr. 2015.

A. Pourkazemi, W. Ranson, J. Stiens, M. Becquaert and M. Vandewal, “Novel illumination and parameter extraction technique for the characterization of multilayer structures in the GHz range with deep sub-wavelength resolution,” in Mediterranean Microwave Symposium, IEEE, Lecce, Italy: IEEE, Nov. 2015, pp. 4.

G. He, G. Shkerdin, H. Alkorre and J. Stiens, “Finite-Difference Frequency-Domain Method Simulates Electromagnetic Wave Propagation Properties of Parallel Plate Waveguide with Graphene and SiO2 Layers,” in 20th Symposium of the IEEE Photonics Society Benelux Chapter, Nov. 2015.

H. Alkorre, J. Stiens and G. Shkerdin, “Intriguing properties of coupled metal-graphene surface plasmons,” in 4th NSE PhD Vrije Universiteit Brussel, May. 2015, pp. 19.

H. Alkorre, G. Shkerdin, R. Vounckx and J. Stiens, “Amplitude and Phase modulation Designs at 300 GHz Exploiting Graphene Based Waveguide Configurations,” in 20th Symposium of the IEEE Photonics Society Benelux Chapter, IEEE, 2015, pp. 4.

H. Alkorre, G. Shkerdin, C. De Tandt and J. Stiens, “Graphene plasmonics at millimeter wave and terahertz (THz) wave frequency: Graphene plasmonics at millimeter wave and terahertz (THz) wave frequency,” in Women in Optics – The Castle Meeting, 2015, pp. 1.

V. Matvejev, Y. Zhang, S. Muyldermans, D. Maes and J. Stiens, “Bio-chemical Process Monitoring with Terahertz Sensor,” in NATO Advanced Research Workshop on THz Diagnostics of CBRN effects and Detection of Explosives & CBRN, Nov. 2015, pp. 1.

2014

J. Stiens, H. Alkorre, G. Shkerdin and R. Vounckx, “The lower and sub-THz frequency range: the optimal spectrum for coupled graphene-metal like plasmon polaritons,” in the International Conference on Semiconductor Mid-IR Materials and Optics SMMO2014, 2014.

H. Alkorre, G. Shkerdin, J. Stiens, Y. Trabelsi and R. Vounckx, “(BEST PAPER) Efficient Fermi Level modulation of coupled graphene-metal surface plasmon polaritons at GHz and low THz frequencies,” in The Fourth International Conference on Multimedia Computing and Systems, IEEE, 2014, pp. 5.

2013

B. Zhu, G. He, J. Stiens and R. Vounckx, “Analysis and optimization of a focusing metal-dielectric probe for Near-field Terahertz Imaging,” in Radar Conference (EuRAD), 2013 European, IEEE, Oct. 2013.

V. Matvejev, Y. Zhang and J. Stiens, “Performance Evaluation of an Integrated Terahertz Sensor for Biomolecule Detection in Liquid Phase,” in The 38th International Conference on Infrared, Millimeter, and Terahertz Waves, USA: IEEE, Sep. 2013.

2012

S. Rabbaa and J. Stiens, “Theoretical Triangular Quantum Well Model for AlGaN/GaN HEMT Structure Used as Polar Liquid Sensor,” in Semiconductor Electronics (ICSE), 2012 10th IEEE International Conference on, IEEE, Sep. 2012.

W. Vandermeiren, J. Stiens, C. De Tandt, W. Ranson, G. Shkerdin and R. Vounckx, “Wafer scale non-destructive metrology on sub-wavelength diffraction gratings by means of Wood's anomaly,” in SPIE Optical Micro- and Nanometrology IV, SPIE, May. 2012, pp. 6.

2011

B. Zhu, S. Vanloocke, J. Stiens, D. De Zutter, A. Elhawil, C. De Tandt and R. Vounckx, “A Novel 3D Printed Focusing Probe in Scattering-type Scanning Near-field Millimeter & Terahertz Wave Microscope,” in 5, European Association on Antennas and Propagation, Apr. 2011, pp. 4.

B. Zhu, S. Vanloocke, V. Matvejev, J. Stiens, D. De Zutter and R. Vounckx, “Scanning Near-field Millimeter Wave Microscope Combining Dielectric Tapered Probes and Metal Tips,”, Sep. 2011, pp. 536-539.

R. Saulaeu, J. Stiens and O. Biro, “NEWFOCUS RESEARCH NETWORKING PROGRAM,” in ANTENNAS AND PROPAGATION. EUROPEAN CONFERENCE, Institute of Electrical and Electronics Engineers ( IEEE ), Apr. 2011, pp. 3.

V. Matvejev, F. Ielasi, C. De Tandt, W. Ranson, R. Willaert and J. Stiens, “Label-Free Investigation of Yeast Cell Physiology in Capillary Tubes Sensed by THz Waves,” in Proceedings ESA Workshop on Millimeter-Wave technology and Applications, 2011.

V. Matvejev, F. Ielasi, C. De Tandt, W. Ranson, R. Willaert and J. Stiens, “Label-Free Investigation of Yeast Cell Physiology in Capillary Tubes Sensed by THz Waves,” in Proceedings ESA Workshop on Millimetre-Wave Technology and Applications, Apr. 2011, pp. 4.

2010

J. Stiens, W. Vandermeiren, G. Shkerdin, V. Kotov, C. De Tandt, W. Ranson, G. Borghs and R. Vounckx, “Evanescent wave modulator for medium infrared wavelengths (8 – 12 µm),” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE, Mar. 2010, pp. 9.

A. Elhawil, J. Stiens, C. De Tandt, W. Ranson and R. Vounckx, “An experimental study of the effects of various parameters on the resonant and efficiency of circular split-ring resonators,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE, Apr. 2010, pp. 6.

A. Elhawil, J. Stiens, C. De Tandt, W. Ranson and R. Vounckx, “Characterisation of Silicon Wafer Bonding Quality using Mm-wave Quasi-Optical technique,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE, Apr. 2010, pp. 6.

A. Elhawil, J. Stiens, C. De Tandt, W. Ranson and R. Vounckx, “Thin-film sensing using circular open ring resonators at mm-wave frequencies,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Feb. 2010, pp. 4.

B. Zhu, J. Stiens, G. Poesen, S. Vanloocke, D. De Zutter and R. Vounckx, “Dielectric Analysis of 3D Printed Materials for Focusing Elements Operating in Mm & THz Wave Frequency Bands,” in Photonics Benelux Chapter, IEEE, Nov. 2010, pp. 4.

I. Ocket, D. Schreurs, V. Tavakol, F. Qi, B. Nauwelaers and J. Stiens, “Design Challenges for Millimeter Wave Active Imaging Systems,” in European Radar Conference, IEEE, Oct. 2010, pp. 4.

M. Abidi, A. Elhawil, J. Stiens, R. Vounckx, J. Tahar and F. Choubani, “Sensing Liquid Properties Using Split-Ring Resonator in Mm-wave Band,” in Annual Conference of IEEE Industrial Electronics, Nov. 2010, pp. 4.

S. Islam, J. Stiens and R. Vounckx, “A sensitivity analysis of frequency selective surfaces based structure at THz frequency,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE, Apr. 2010, pp. 6.

S. Rabbaa, J. Stiens and W. Vandermeiren, “Longitudinal optical phonon-plasmon interaction in Ga-group V compounds for IR and THz applications,” in IEEE-Photonics BENELUX chapter, IEEE, Nov. 2010, pp. 4.

V. Matvejev, C. De Tandt, W. Ranson and J. Stiens, “Wet silicon bulk micromachined THz waveguides for low-loss integrated sensor applications,” in 35, 2010.

W. Vandermeiren, J. Stiens, C. De Tandt, G. Shkerdin, V. Kotov, G. Borghs, P. Muys and R. Vounckx, “Thermal cross-talk reduction in IR thermo-electric photodetectors by lock-in method: 4D numerical simulations and experimental verification,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE, Mar. 2010, pp. 9.

2009

A. Elhawil, J. Stiens, C. De Tandt, W. Ranson and B. Zhu, “Left-handed meta-material at D-band using single circular split-ring resonator,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE Photonics Benelux Chapter, Oct. 2009.

F. Qi, V. Tavakol, I. Ocket, S. Islam, I. Jäger, D. Schreurs, J. Stiens and B. Nauwelaers, “Hadamard Speckle Contrast Reduction for Imaging System: Comprehension and Evaluation,” in European Radar Conference, IEEE, Oct. 2009, pp. 4.

I. Jäger, A. Elhawil, L. Zhang, J. Stiens and R. Vounckx, “Multispectral millimetre wave imaging with metamaterials,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Jun. 2009, pp. 2.

S. Islam, J. Stiens and R. Vounckx, “Metamaterial Application in Active Millimeter Wave Imaging,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, 2009.

2008

A. Elhawil, J. Stiens and R. Vounckx, “Negative Effective Permeability and Permittivity at W-band,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, The 14th MICROOPTICS CONFERENCE (MOC08), Sep. 2008, pp. 2.

A. Elhawil, J. Stiens, G. Nicolaas-Alexander Gotzen, A. Guy Van and R. Vounckx, “Investigation of Dielectric Properties of Polymers at Mm-wave Band using Quasi-optical Free Space Method,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, The 14th MICROOPTICS CONFERENCE (MOC08), Sep. 2008, pp. 2.

A. Elhawil, I. Jäger, S. Islam, L. Zhang, A. Franchois, R. Vounckx and J. Stiens, “Characterisation of left-handed materials with quasi-optical method in the mm wave band,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, S. Zoudi, Mar. 2008, pp. 9.

C. Roda-Neve, G. Poesen, D. Schreurs, J. Raskin, J. Stiens and R. Vounckx, “Microwave Characterization of optical modulated Photo-induced switches with a passivation layer using an LSNA,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE, Dec. 2008, pp. 6.

I. Jäger, A. Stoehr, J. Stiens, R. Vounckx and D. Jaeger, “Nonlinear Optoelectronics in Bragg Heterostructures,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Oct. 2008, pp. 2.

I. Jäger, L. Zhang, J. Stiens, S. Islam and R. Vounckx, “Speckle reduction tools for active THz imaging,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, EOS, Oct. 2008, pp. 6.

L. Zhang, J. Stiens and H. Sahli, “Multispectral Image Fusion for Active Millimeter Wave Imaging Application,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE, May. 2008, pp. 4.

S. Islam, J. Stiens, G. Poesen, I. Jäger and R. Vounckx, “Heuristic approach of Finite Grounded Frequency Selective Surface Arrays characterization in W-band,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Dec. 2008, pp. 4.

S. Islam, J. Stiens, I. Jäger and R. Vounckx, “Grounded Frequency Selective Surface Array as Millimeter Wave Beam Splitter,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE, Apr. 2008, pp. 7.

S. Van Den Bulcke, A. Franchois, J. Geffrin, L. Zhang and J. Stiens, “3D scattering by large inhomogeneous 2D objects: Validation of a full-wave 2.5D VIE Solver with mm-wave Gaussian beam and microwave experiments,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Jul. 2008, pp. 2.

S. Van Den Bulcke, A. Franchois, L. Zhang and J. Stiens, “Modeling a millimeter wave imaging system with a 2.5D BiCGS-FFT volume integral equation technique,” in First European Conference on Antennas and Propagation Conference, IEEE, 2008, pp. 5.

W. Vandermeiren, J. Stiens, C. De Tandt, E. Delarbre, G. Borghs and R. Vounckx, “3D Modeling of a thermo-electric detector array for deconvolution based laser beam profile reconstruction,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE/LEOS Benelux chapter, University of Twente, Nov. 2008, pp. 4.

2007

J. Stiens, L. Zhang, A. Elhawil, I. Jäger, G. Koers, H. Sahli and P. Schelkens, “Multidimensional illumination and image processing techniques in the W-band for recognition of concealed objects,”, 2007.

A. Elhawil, L. Zhang, J. Stiens, C. De Tandt, G. Van Assche, A. Alexander and R. Vounckx, “A quasi-optical Free-Space Method for Dielectric Constant Characterisation of Polymer Materials in the mm-wave band,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE, Dec. 2007, pp. 4.

A. Elhawil, L. Zhang, J. Stiens, C. De Tandt, N. Gotzen, G. Van Assche and R. Vounckx, “A Quasi-Optical Free-Space Method for Dielectric Constant Characterization of Polymer Materials in mm-wave Band,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE/LEOS Benelux December, Dec. 2007, pp. 4.

G. Poesen, J. Stiens and R. Vounckx, “Optically Modulated CPW Line Characterized with a Large Signal Network Analyzer,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Bangkok University Press, Dec. 2007, pp. 3.

I. Jäger, G. Koers, L. Zhang, J. Stiens and R. Vounckx, “THz speckle suppression by Hadamard diffuser,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Sep. 2007.

I. Jäger, L. Zhang, J. Stiens, G. Koers, H. Sahli and R. Vounckx, “W-band speckle contrast images for inspection of concealed objects,”, Jun. 2007.

R. Ayukhanov, G. Shkerdin, V. Kotov and J. Stiens, “Linear and nonlinear photoeleastic coefficients in superlattices with tilted energy band profiles,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, 2007.

S. Islam, J. Stiens, G. Poesen, I. Jäger and R. Vounckx, “Frequency Selective Surface as a filter for mm-wave imaging,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Diamond Congress Ltd., Budapast, Hungary, 2007, pp. 4.

S. Islam, J. Stiens, G. Poesen, I. Jäger and R. Vounckx, “W-band Millimeter Wave Artificial Magnetic Conductor realization by grounded frequency Selective Surfaces,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE/LEOS Benelux Chapter, Dec. 2007, pp. 4.

S. Islam, J. Stiens, G. Poesen, I. Jäger, G. Koers and R. Vounckx, “Grounded Frequency Selective Surfaces as W-band quasi-optical Filters for Active Millimeter Wave Imaging,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Bangkok University Press, Dec. 2007, pp. 4.

V. Kotov, J. Stiens, R. Ayukhanov, G. Shkerdin and R. Vounckx, “Edge enhancement in optical images at different orders of acousto-optic Bragg Diffraction,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Apr. 2007.

W. Vandermeiren, J. Stiens, J. Verwimp, V. Kotov, G. Shkerdin, C. De Tandt, G. Borghs and R. Vounckx, “Seebeck infrared photodetectors for high power CO2 laser beam monitoring,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Meisenbach Bamberg, Sep. 2007, pp. 10.

2006

J. Stiens, R. Vounckx and G. Koers, “Random Phase Pattern Creation for Speckle Reduction in Active Millimeter Wave Imaging Systems,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Millilab, Espoo, Finland, Feb. 2006, pp. 4.

I. Jäger, J. Stiens, G. Koers, G. Poesen and R. Vounckx, “Speckle reduction in THz imaging systems with multiple phase patterns,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE, Apr. 2006, pp. 12.

I. Jäger, J. Stiens, G. Koers, S. Islam and R. Vounckx, “W-band speckle contrast measurements with a Hadamard diffuser,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Sep. 2006, pp. 6.

I. Ocket, B. Nauwelaers, G. Koers and J. Stiens, “Fast Modelling and Optimization of Active Millimeter Wave Imaging Systems,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Sep. 2006, pp. 4.

I. Ocket, B. Nauwelaers, L. Meert, F. Olyslager, G. Koers, J. Stiens and R. Vounckx, “Characterisation of speckle/despeckling in active millimeter wave imaging systems using first order 1.5 D model,” in Photonics Europe, SPIE, 2006, pp. 8.

J. Liu, A. Bourdoux, F. Horlin, V. Der Perre L, J. Stiens and A. Barel, “Impact of Analog Transceiver Mismatch on MIMO Joint Tx/Rx Processing,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE, Sep. 2006, pp. 8.

S. Van Den Bulcke, A. Franchois, L. Zhang and J. Stiens, “A 2.5D BiCGS-FFT Forward Solver to Model Scattering in a mm-Wave Imaging System,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Sep. 2006, pp. 4.

S. Van Den Bulcke, A. Franchois, L. Zhang and J. Stiens, “Modeling a mm-Wave Imaging System with a 2.5D BiCGS-FFT Volume Integral Equation technique,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, ESA Publications Division, Nov. 2006.

V. Kotov, J. Stiens, R. Vounckx, C. De Tandt, G. Borghs and G. Shkerdin, “Seebeck infrared photodetectors: an ultrawide dynamic range of design possibilities,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE, Apr. 2006, pp. 12.

2004

J. Stiens, G. Poesen, G. Koers, P. Simon, J. Raskin, I. Huynen and R. Vounckx, “Opto-electronic control of coplanar transmission lines up to 110 GHz,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, SPIE Microwave and Terahertz Photonics, Vol. 5466, pp. 101-108, SPIE, Strasbourg, France, 2004, pp. 1.

G. Koers, J. Stiens, G. Poesen, P. Simon, J. Raskin, I. Huynen and R. Vounckx, “Optical modulation of CPW lines on high-resistive BCB coated silicon substrates up to 110 GHz,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, Proceedings of the 2nd European NEFERTITI Winter School, University of Leeds, Leeds, United Kingdom, 2004.

2003

J. Stiens, G. Koers, G. Poesen, M. Kuijk, I. Huynen, J. Raskin, B. Nauwelaers, D. Schreurs and R. Vounckx, “Challenges and perspectives for millimeter and submillimeter wave applications (invited),” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, International Conference on Advances in the Internet, Processing, Systems and Interdisciplinary Research, pp. 74, Sveti Stefan, Yougoslavia, 2003.

G. Poesen, G. Koers, P. Simon, J. Raskin, I. Huynen, J. Stiens and R. Vounckx, “Modeling photo-induced plasmas in planar transmission lines for switching millimeter-wave signals,” in Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, IEEE International Topical Meeting on Microwave Photonics, pp. 117-120, Hungarian Academy of Sciences, Budapest, Hungaria, 2003, pp. 1.

2002

G. Koers, G. Poesen, P. Simon, J. Raskin, J. Stiens, I. Huynen and R. Vounckx, “Photo-induced Switching of microwave and millimeter wave signals on coplanar waveguides,” in Seventh Annual Syposium of the IEEE/LEOS Benelux Chapter, Seventh Annual Syposium of the IEEE/LEOS Benelux Chapter, Vol. 7, pp. 179-182, IEEE/LEOS Benelux Chapter, Amsterdam, The Nederlands, 2002, pp. 1.

2001

J. Stiens, V. Kotov, G. Shkerdin, G. Borghs and R. Vounckx, “Experimental Proof of a giant thermo-diffusive effect in n-GaAs,” in IEEE-LEOS Benelux Chapter, IEEE-LEOS Benelux Chapter, pp. 261-264, Brussels, Belgium, 2001, pp. 1.

J. Stiens, V. Kotov, G. Shkerdin, G. Borghs and R. Vounckx, “Investigation of optical nonlinearities in n-GaAs based on multi-valley distributed hot electrons,” in XVII International Conference on Coherent and Nonlinear Optics ICONO, June 26 - July 1, 2001, XVII International Conference on Coherent and Nonlinear Optics ICONO, June 26 - July 1, 2001, Vol. 4748, pp. 240-250, Minsk, Belarus, 2001, pp. 1.

G. Koers, J. Stiens and R. Vounckx, “Large aperture coupled microstrip patch antenna arrays: Proposal for opto-electronic control of micro and mm-wave radiation,” in Sixth Annual Symposium of the IEEE/LEOS Benelux Chapter, Sixth Annual Symposium of the IEEE/LEOS Benelux Chapter, pp. 229-232, IEEE/LEOS, Brussels, Belgium, 2001, pp. 1.

G. Shkerdin, J. Stiens and R. Vounckx, “Superheated free-electron gas in n-GaAs: the role of X-valley electrons in optical nonlinearities at 10.6 micron,” in Proc. IEEE-LEOS Benelux, Proc. IEEE-LEOS Benelux, pp. 257-260, 2001, pp. 1.

V. Kotov, J. Stiens, G. Shkerdin and R. Vounckx, “Cascade acousto-optic diffraction for communication systems,” in XVII International Conference on Coherent and Nonlinear Optics ICONO, XVII International Conference on Coherent and Nonlinear Optics ICONO, Minsk, Belarus, 2001.

V. Kotov, G. Shkerdin, D. Shkerdin, J. Stiens and R. Vounckx, “Influence of the acousto-optic bragg diffraction on the degree of the spatial coherence of optical beams,” in Proc. IEEE-LEOS Benelux Chapter, Proc. IEEE-LEOS Benelux Chapter, pp. 253-256, 2001, pp. 1.

V. Kotov, G. Shkerdin, D. Shkerdin, J. Stiens and R. Vounckx, “The speckle reduction of optical fields in multi-mode fibres by means of acousto-optic Bragg diffraction,” in Proc. IEEE-LEOS Benelux, Proc. IEEE-LEOS Benelux , pp. 249-252, 2001, pp. 1.

2000

J. Stiens, R. Vounckx, M. Banish and R. Clark, “Evanescent Coupling Alternatives for YAG lasers,” in SPIE Photonics West, SPIE Photonics West , Vol. 3929, Nr. 13, pp. 108-115, 2000, pp. 1.

D. Coppée, J. Genoe, J. Stiens, R. Vounckx and M. Kuijk, “Experimental determination of the 3dB frequency of the Spatially Modulated Light CMOS detector as a function of technology,” in Proceedings SAFE 2000, Proceedings SAFE 2000, Vol. 1, pp. 33-36, 2000, pp. 1.

F. Devisch, J. Stiens, R. Vounckx and M. Kuijk, “A power reduction method for off-chip interconnects,” in IEEE International Symposium on Circuits and Systems.Emerging Technologies for the 21st Century, Presses Polytech. Univ. Romandes, Lausanne, Switzerl, May. 2000, pp. 4.

F. Devisch, J. Stiens, R. Vounckx and M. Kuijk, “Low Power RLC-Resonant Method for Driving Liquid-Crystal Displays,” in SID Technical Digest, SID Technical Digest, Vol. 31, pp. 594-598, 2000, pp. 1.

1999

J. Stiens, F. Devisch, R. Vounckx and M. Kuijk, “Novel Low Power Drivers for Liquid-Crystal Displays,” in ProRISC/IEEE 10th Annual Workshop on `Circuits and Systems and Signal Processing, ProRISC/IEEE 10th Annual Workshop on `Circuits and Systems and Signal Processing, 1999.

J. Stiens, G. Nemova, P. Muys and R. Vounckx, “Highly efficient diffraction gratings and resonant plasma layers at IR-wavelengths,” in SPIE International Symposium on Photonics and Applications ISPA, SPIE International Symposium on Photonics and Applications ISPA, Vol. 3897, pp. 640-649, Singapore, Singapore, 1999, pp. 1.

J. Stiens, G. Shkerdin and R. Vounckx, “Non-linear free-carrier absorption in non-parabolic III-V semiconductors,” in ICONO 98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures, ICONO 98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures, Vol. 3734, pp. 171-181, Moscow, Russia, 1999, pp. 1.

J. Stiens, G. Shkerdin, F. Marest and R. Vounckx, “The Optical Gunn effect in n-doped GaAs at mid and far IR-wavelengths,” in SPIE Proc. International Symposium on Photonics and Applications ISPA, SPIE Proc. International Symposium on Photonics and Applications ISPA, Vol. 3899, pp. 196-207, Singapore, Singapore, 1999, pp. 1.

J. Stiens, W. Ranson, C. De Tandt, E. Van Damme, P. Muys and R. Vounckx, “High index diffraction gratings: An alternative for efficiently pumping solid-state lasers,” in IEEE LEOS-Benelux, IEEE LEOS-Benelux, pp. 191-194, 1999, pp. 1.

J. Stiens, W. Ranson, C. De Tandt, P. Muys, V. Kotov, G. Borghs and R. Vounckx, “A Resonant Intracavity Modulator for Q-Switching a CO2 Laser in a new Parameter Regime,” in EOS-SPIE Conference on Industrial Lasers & Inspection, EOS-SPIE Conference on Industrial Lasers & Inspection, Vol. 3822, pp. 136-143, Munich, Germany, 1999, pp. 1.

F. Devisch, J. Stiens, R. Vounckx and M. Kuijk, “Energy-recycling Output drivers for interchip Interconnections,” in STW/SAFE 2nd Annual Workshop on `Semiconductor Advances for Future Electronics, STW/SAFE 2nd Annual Workshop on `Semiconductor Advances for Future Electronics, STW Technology Foundation, The Netherlands, 1999.

G. Nemova and J. Stiens, “The peculiarities of IR-diffraction on rectangula-grooved transmission phase grating containing a layer of resonant plasma,” in Proc International Conference of Optical Information Processing, Proc International Conference of Optical Information Processing, pp. 30, Moscow, Russia, 1999.

V. Kotov, G. Shkerdin, J. Stiens and R. Vounckx, “Interaction Of Two-Color Beam In Isotropic Media,” in 3rd International Conference on Optical Information Processing, 3rd International Conference on Optical Information Processing, pp. 3, Moscow, Russia, 1999.

1998

J. Stiens, W. Ranson, C. De Tandt, V. Kotov, G. Shkerdin, G. Borghs, P. Muys and R. Vounckx, “Design Issues of an intracavity modulator for a Q-switched CO2-laser,” in IEEE-LEOS Benelux 1998, IEEE-LEOS Benelux 1998, pp. 125-128, 1998, pp. 1.

R. Vounckx, J. Stiens, C. De Tandt, W. Ranson, G. Borghs, G. Shkerdin, V. Kotov, G. Nemova, B. Dhoedt, R. Windisch, P. Heremans, B. Dutta, S. Schobert, J. Genoe, M. Kuijk, P. Kiesel and G. Dohler, “Optoelectronic Devices and Nanometer Precision (invited),” in Joint Japanese Flemisch Seminar on Nanostructures and Low Dimensional Systems, Joint Japanese Flemisch Seminar on Nanostructures and Low Dimensional Systems, Vol. 1, pp. 34-37, Leuven, Belgium, 1998, pp. 1.

G. Shkerdin, J. Stiens and R. Vounckx, “Picosecond Optical Intervalley Switching near the Plasma Resonance in highly doped n-GaAs,” in CLEO-EQEC 98, CLEO-EQEC 98, pp. 190, 1998.

V. Kotov, G. Shkerdin, J. Stiens and R. Vounckx, “Collinear interaction of two-colored optical beam with a single acoustic wave,” in ISSWAS-98, IEEE-UFFC, ISSWAS-98, IEEE-UFFC. , pp. 80, 1998.

1997

D. Coppée, W. Pan, J. Stiens, R. Vounckx and M. Kuijk, “The spatially modulated silicon CMOS detector,” in IEEE LEOS Symposium Benelux Chapter, IEEE LEOS Symposium Benelux Chapter, Vol. 1, pp. 25-28, Eindhoven, The Netherlands, 1997, pp. 1.

S. Goeman, B. Dhoedt, K. Caekebeke, S. Verstuyft, R. Baets, P. Van Daele, N. Nieuborg, J. Stiens, H. Thienpont and R. Vounckx, “Experimental demonstration of 'GIRO-gratings',” in Proc. of the 1997 Symposium of the IEEE/LEOS Benelux Chapter, Eindhoven, The Netherlands, pp. 49-52, 1997, 1997.

1996

A. Voronko, J. Stiens, G. Shkerdin and R. Vounckx, “Non-Linear Reflection of Mid-Infrared Light through a Structure containing Highly Doped GaAs Layers,” in ICONO 95, ICONO 95, Vol. 2801, pp. 180-190, St Petersburg, Russia, 1996, pp. 1.

1995

J. Stiens, “Het optisch Gunn-effect bij 10.6 µm : studie van sub-ns optische schakel-elementen,” in URSI-95 Broadband Communications, URSI, 1995.

1994

J. Stiens, C. De Tandt, W. Ranson, R. Vounckx, I. Veretennicoff and G. Borghs, “Proposal for a High Speed Resonant Plasma Modulator with sub-Watt Power Dissipation for use in medium-IR Lidar Applications,” in SPIE Proc, SPIE Proc., Vol. 2310, pp. 84-95, 1994, pp. 1.

1993

J. Stiens, C. De Tandt, W. Ranson and R. Vounckx, “Materials and Structures for the 10.6µm IMOS,” in URSI 93, URSI, 1993.

J. Stiens, C. De Tandt, W. Ranson and R. Vounckx, “The Integrated Mirror Optical Switch, a CO2 modulator with possible applications in satellite communications and in integrated optics,” in Nieuwe kansen in de ruimtevaart, FLAG-Proc, Nieuwe kansen in de ruimtevaart, FLAG-Proc., Leuven, Belgium, 1993.

J. Stiens, C. De Tandt, W. Ranson, R. Vounckx, I. Veretennicoff, G. Borghs, I. Moerman and P. De Meester, “Resonant III-V Semiconductor layer and a grating coupler Integrated in a waveguide modulator for far-infrared light,” in Photonics in Switching 93, Photonics in Switching 93, Vol. 16, pp. 51-54, Palm Springs, USA, 1993, pp. 1.

1992

J. Stiens, R. Vounckx, A. Voronko and G. Shkerdin, “Integrated Mirror Optical Switch : Resonant semiconductor layer integrated in a far-infrared coupled waveguide modulator,” in Photonic Switching, Photonic Switching, Vol. 1807, pp. 241-248, 1992, pp. 1.

1991

J. Stiens and R. Vounckx, “A new modulator for far-infrared light: IMOS, integrated mirror optical Switch,” in The Rank Prize Funds' Mini-symposium on Optical Modulation Using Semiconductor Plasmas, The Rank Prize Funds' Mini-symposium on Optical Modulation Using Semiconductor Plasmas, pp. 21-22, Grasmere, UK, 1991, pp. 1.

Book Publications

2017

V. Matvejev, A. Pourkazemi, H. Alkorre, G. Shkerdin and J. Stiens, “THz wave sensing at ETRO-VUB: beyond conventional limits,” in THz wave sensing at ETRO-VUB: beyond conventional limits, Springer, Jan. 2017, pp. 12.

Y. Zhang, V. Matvejev, S. Declerck, S. Stroobants, G. Pandey, G. He, D. Mangelings, D. Maes, S. Muyldermans and J. Stiens, “Bio-chemical Process Monitoring with Terahertz Sensors,” in THz for CBRN and Explosives' Detection and Diagnosis 2017, 1ed.: Springer, Jan. 2017, pp. 8.

2014

J. Stiens, S. Rabbaa and G. Shkerdin, “GaN-based Semiconductor Devices: Theoretical Study of the Electronic and Optoelectronic Characterization,”: Lambert Academic Publishing, Dec. 2014, pp. 212.

2012

V. Matvejev, J. Stiens, C. De Tandt and D. Mangelings, “THz bio-chemical sensing capabilities with high performance SIW based sensor on nL-volume liquids in capillary tubes,” in Terahertz and Mid Infrared Radiation: Detection of Explosives and CBRN (Using Terahertz): Springer, Nov. 2012.

2010

W. Vandermeiren, J. Stiens, C. De Tandt, G. Shkerdin, V. Kotov and R. Vounckx, “Infrared thermo-electric photodetectors,” in Laser Pulse phenomena and applications, InTech, Nov. 2010, pp. 22.

2008

J. Stiens, “Onderwijsvernieuwing: een continu proces,” in Project: bijdragen tot businessplan Halfgeleidercomponenten voor CO2 lasers, VUBPRESS, 2008, pp. 3.

2007

I. Jäger, L. Zhang, J. Stiens, H. Sahli and R. Vounckx, “Millimeter wave inspection of concealed objects,” in Microwave and Optical Technology Letters, Wiley, Nov. 2007, pp. 5.

Reports

1996

J. Stiens, “The integrated Mirror Optical Switch: Optical Plasma Resonance Effects in Semiconductors used for the control of 10mm Infrared Light,”, Vrije Universiteit Brussel, 1996.

Other Publications

2020

G. He, C. Chen and J. Stiens, “Reconfigurable Terahertz Dipole Antenna with Integrated Graphene Sheets,”, 2020.

2019

A. Solé Morillo, J. Stiens, E. Van Wittenberghe and M. Malbrain, “A low-cost system for continuous vital sign monitoring using the technology behind pulse-oximeters,”, Nov. 2019.

2017

A. Pourkazemi, G. Pandey, J. Assaf, P. Bismpas, E. Tsangouri, J. Stiens and D. Aggelis, “Combination of Acoustic Emission and Millimeter Wave Spectroscopy Techniques to Investigate Damage on Cementitious Materials,”, Sep. 2017.

G. He and J. Stiens, “Enhanced terahertz absorption in graphene composite integrated with double circular metal ring array,” in The fifth international biennial ‘Nanomaterials and Nanotechnology Meeting’, May. 2017.

G. Pandey, K. Ciesla1, J. Stiens and H. Rahier, “The effect of Gamma irradiation on interaction of nanocellulose with water studied by differential scanning calorimetry and mm-wave spectroscopy,” in International conference on Development and Applications of Nuclear Technologies, Sep. 2017.

N. Fiévet, J. Stiens and Y. Zhang, “Fast and reliable measurement modules for advanced narrow-band sensing applications in the millimeter wave domain,”, Feb. 2017.

S. Moraes Da Silva Junior, J. Stiens, j. Swart, S. Moshkalev, Y. Zhang, V. Matvejev and C. De Tandt, “THz sensor in microfluidic devices for on line determination and control of ethanol concentration,” in THz sensor in microfluidic devices for on line determination and control of ethanol concentration, May. 2017.

S. Moraes Da Silva Junior, J. Stiens, J. Swart, S. Moshkalev, Y. Zhang, V. Matvejev, W. Vandermeiren and C. De Tandt, “Microfluidic devices and Gigahertz sensor applied to measurements of liquid mixtures concentration,” in SBMicro 2017 - 32nd Symposium on Microelectronics Technology and Devices, Nov. 2017.

S. Moraes Da Silva Junior, J. Stiens, j. Swart, Y. Zhang, V. Matvejev and C. De Tandt, “Coupling a sub-THz liquid sensor for online microfluidic sensing,”, Feb. 2017.

S. Moraes Da Silva Junior, L. Bento Ribeiro, S. Moshkalev, J. Stiens, J. Swart, F. Fruett and A. Flacker, “Fabrication and Evaluation of an Active Electromagnetic Mixer for Lab-on-a-Chip Applications,” in Fabrication and Evaluation of an Active Electromagnetic Mixer for Lab-on-a-Chip Applications, 2017.

2016

A. Pourkazemi and J. Stiens, “Characterization of multilayer structures,”, Dec. 2016.

B. De Cock, J. Stiens, D. Mangelings and Y. Vander Heyden, “POSTER: Inter-instrumental transfer of a chiral capillary electrophoretic method: the use of robustness test information to overcome differences in detector and data-handling specifications,”, May. 2016.

B. De Cock, N. Delaunay, J. Stiens, D. Mangelings and Y. Vander Heyden, “POSTER: Inter-instrumental method transfer of capillary electrophoretic methods: The use of precision studies and robustness test information,”, 2016.

G. Pandey, W. Vandermeiren, L. Dimiccoli and J. Stiens, “Contact-less millimetre-wave based sensor with enhanced sensitivity for inline extraction of food properties during a production process,” in 30th EFFoST International Conference, Nov. 2016.

M. Alexandra Mernea, I. Vasile, O. Calborean, S. Avram, Y. Zhang, D. Maes, S. Muyldermans, J. Stiens and D. Mihailescu, “Molecular modeling of protein binding events that can be detected with a millimeter-wave sensor,”, Mar. 2016.

S. Stroobants, D. Maes, Y. Zhang and J. Stiens, “Can we detect protein crystal nucleation with THz waves?,”, May. 2016.

V. Matvejev, Y. Zhang, S. Muyldermans, D. Maes and J. Stiens, “Biochemical Detection Applications Enabled by State-of-the-Art Terahertz Sensor,” in VDI/VDE Society, Measurement and Automation Control, Mar. 2016.

V. Van Eeghem, A. El Arfani, A. Anthoula, A. Pourkazemi, I. Smolders and J. Stiens, “Behavioral alterations in mice due to low-intensity microwaves with amplitude modulation in the EEG frequency band,”, Jun. 2016.

V. Van Eeghem, K. Goossens, G. Pandey, G. He, C. De Tandt, B. Keelson, R. Willaert and J. Stiens, “The impact of millimeter waves on the enzymatic activity of succinate dehydrogenase,”, Jun. 2016.

Y. Zhang, S. Declerck, G. He, V. Matvejev, J. Stiens, D. Mangelings and Y. Vander Heyden, “A novel label-free and universal detector for liquid chromatography systems using millimeter-wave technology,” in The 39th Symposium Chromatographic Methods of Investigating the Organic Compounds, Jun. 2016.

Y. Zhang, S. Declerck, S. Stroobants, G. Pandey, G. He, D. Mangelings, V. Matvejev, J. Stiens, D. Maes, S. Muyldermans, D. Mihailescu and M. Alexandra Mernea, “Experimental validation of a Label-free Immobilization-free mm wave sensor in different biological and pharmaceutical applications,”, Mar. 2016.

2015

J. Stiens, A. Van Eeckhaut, D. Mangelings and Y. Vander Heyden, “POSTER: Inter-instrumental method transfer of a capillary electrophoretic separation of angiotensin II and its derivatives,”, 2015.

B. De Cock, J. Stiens, A. Van Eeckhaut, D. Mangelings and Y. Vander Heyden, “ORAL PRES.: Inter-instrumental method transfer of a capillary electrophoretic separation of angiotens II and derivatives,” in IVth PhD day @ Jette, Vrije Universiteit Brussel, 31 March 2015, Brussels, Belgium, 2015.

B. De Cock, A. Van Eeckhaut, J. Stiens, D. Mangelings and Y. Vander Heyden, “ORAL PRES.: Inter-instrumental method transfer of a capillary electrophoretic separation of angiotens II and derivatives,” in 18th Forum of Pharmaceutical Sciences, 28-29 mei 2015, Blankenberge, Belgium, 2015.

E. Achmad, C. Wang and J. Stiens, “Broadband Frequency Swept Millimeter-Wave Source based on Cascaded Temporal Optical Pulse Shaping,” in International Topical Meeting on Microwave Photonics (MWP), 2015ed., Oct. 2015.

H. Alkorre, J. Stiens and G. Shkerdin, “Planar four layers waveguide structure at sub-THz frequencies comprising metal and garphene: a complex scenery of coupled modes,” in Graphene 2015, Bilbao, Spain, March 13-15, 2015.

M. Alexandra Mernea, I. Vasile, O. Calborean, J. Stiens and D. Mihailescu, “Molecular modelling on GHz-THz sensing of camel single domain antibodies binding to lysozyme,” in National Conference of the Romanian Society of Biophysics, 2015ed., Jun. 2015.

2014

J. Stiens, V. Matvejev and Y. Zhang, “The importance of the hydration shell in GHz-THz sensing of liquids: experimental results,” in TERAMIR Workshop, Nov. 2014.

J. Stiens, W. Vandermeiren, V. Matvejev, C. De Tandt, W. Ranson, R. Vounckx, B. Zhu, A. Pourkazemi, H. Alkorre, G. Pandey, A. Anthoula and G. He, “Sensing in the GHz-THz range @ ETRO-VUB: Beyond the Conventional Limits,” in International Conference on Semiconductor Mid-IR Materials and Optics SMMO2014, Mar. 2014.

B. De Cock, B. Dejaegher, J. Stiens, D. Mangelings and Y. Vander Heyden, “ORAL PRES.: Precision evaluation of chiral capillary electrophoretic methods in the context of inter-instrumental transfer: constant-current versus constant-voltage application,” in Flash presentation at 13th International Symposium on Hyphenated Techniques in Chromatography and Separation Technology January 29-31, 2014, Bruges, Belgium, 2014.

B. Dejaegher, J. Stiens, D. Mangelings and Y. Vander Heyden, “POSTER: Inter-instrumental transfer of a chiral capillary electrophoretic method guided by precision studies and robustness test data,”, 2014.

B. Dejaegher, J. Stiens, D. Mangelings and Y. Vander Heyden, “POSTER: Precision evaluation of chiral capillary electrophoretic methods in the context of inter-instrumental transfer: constant current versus constant voltage,”, 2014.

D. Maes, M. Sleutel, A. Van Driessche, M. Giglio, M. Potenza, T. Sanvito, J. Stiens, Y. Zhang, M. Vorontsova and P. Vekilov, “Nucleation precursors and the birth of crystals,” in 15th International Conference on the Crystallization of Biological Macromolecules, Sep. 2014.

G. Pandey, W. Vandermeiren and J. Stiens, “Millimeter-wave based contactless sensing of food moisture content,” in 28th EFFoST International Conference, Nov. 2014.

V. Matvejev, Y. Zhang, R. Willaert, D. Maes, S. Muyldermans, L. Lagae and J. Stiens, “Generic, label-free and immobilization-free biosensing in nL liquids with Terahertz waves,” in Advances in Biodetection & Biosensors, Berlin (Germany) 10-11 March 2014, Mar. 2014.

W. Vandermeiren, J. Stiens, G. Shkerdin, C. De Tandt and R. Vounckx, “Highly reflective infrared modulator for the CO2 laser wavelength range,” in MIOMD 2014 - Mid Infrared Optoelectronics Materials and Devices XII (October 5-9, 2014), Montpelier France, Oct. 2014.

2013

J. Stiens, V. Matvejev, W. De Raedt, D. Mangelings, C. De Tandt, W. Ranson and R. Willaert, “Waveguide-Capillary Tube Integration Schemes for the Characterization of Nano-liter Liquids at Millimeter Wave Frequencies with Record Sensitivities,” in IEEE Radio and Wireless Week (RWS/SiRF/PAWR/WisNet/BioWireleSS), 2013.

J. Stiens, V. Matvejev, Y. Zhang and C. De Tandt, “Immobilization- and label-free sensing of biomolecules solvated in nanoliter liquids at (sub)- THz wave frequencies with resonating sensor structures featuring loaded Q-factors above 10^4,” in EUROPEAN MICROWAVE WEEK 2013, Oct. 2013.

J. Stiens, W. Vandermeiren, V. Matvejev, C. De Tandt, W. Ranson, G. Shkerdin, R. Vounckx, A. Pourkazemi, B. Zhu, Y. Zhang and G. Pandey, “Millimeter Wave Sensing @ ETRO-VUB: Beyond the Conventional Limits,” in 14th Wireless Community work meeting "Wireless Technologies for remote Sensing", Dec. 2013.

H. Alkorre, G. Shkerdin, C. De Tandt, R. Vounckx and J. Stiens, “Tunable coupled graphene-metal plasmonsin multi-layer structures at GHz and THz frequencies,” in ImagineNano2013 - nanospain2013 conference, Bilbao, Spain, April 23-26, 2013.

2012

V. Matvejev, C. De Tandt, W. Ranson, D. Mangelings, M. Zizi and J. Stiens, “THz Excess Absorption by nL-volume Water-Alcohol Mixtures: Model and Experimental Verification,” in International Forum on THz Spectroscopy and Imaging, Kaiserslautern, Germany, March 2012, Mar. 2012.

2011

V. Matvejev, J. Stiens, C. De Tandt, W. Ranson, A. Pourkazemi, B. Zhu, M. Zizi and R. Vounckx, “Integrated THz Bio-Sensing Technique: Hydration Shell Observation,” in 10th Belgium Day on Biomedical Engineering, 2011.

2010

W. Vandermeiren, J. Stiens, G. Shkerdin and R. Vounckx, “Improved Q-switching performance by transverse laser mode switching,” in 6th, Sep. 2010.

2008

J. Stiens, “Intelligent hyper-spectral mm-wave illumination techniques for feature extraction of hidden objects in indoor security applications: a fusion of photonics, electronics and electromagnetism,” in Work shop of the International Symposium of MicroWave Photonics, Gold Coast (australia), 30Sep-3Oct 2008, Sep. 2008.

L. Somers, A. Van Vlierberghe, G. Poesen and J. Stiens, “Millimetergolfsensoren: een nieuwe benadering om voedingsproducten te bekijken,” in Flanders Food Day, 6 November 2008 , Affligem (belgium), Nov. 2008.

S. Islam, J. Stiens, G. Poesen, I. Jäger, G. Koers and R. Vounckx, “Grounded Frequency Selective Surfaces as W-band Quasi-Optical Filters for Active Millimetre Wave Imaging,” in IEEE, 2008.

2007

J. Stiens, “Infrared Detector,”, Jun. 2007.

R. Ayukhanov, G. Shkerdin, V. Kotov and J. Stiens, “Linear and nonlinear photoeleastic coefficients in superlattices with tilted energy band profiles,” in International Congress on Ultrasonics, Apr. 2007.

2006

J. Stiens, “Photonics in Millimeter Wave Imaging,” in European ISIS Summer School and Workshop, May. 2006.

G. Poesen, J. Stiens, J. Raskin, M. Vanden Bossche and R. Vounckx, “Transient Effects in Optically Modulated Transmission Line Switches,” in International Topical Meeting on Microwave Photonics, Oct. 2006.

G. Poesen, M. Vanden Bossche, G. Koers, J. Stiens and R. Vounckx, “Transient Effects in Optically Modulated Transmission Line Switches Opertaing at Millimeter Wave Frequencies,” in 4th ESA Workshop on Millimetre Wave Technology and Applications, The 8th Topical Symposium on Millimeter Waves - TSMMW2006 , The 7th MINT Millimeter-Wave International Symposium - MINT-MIS2006, Feb. 2006.

2005

J. Stiens, “Development work towards W-band mm-wave imaging,” in RF Technology: Test and Measurement, 2005.

J. Stiens, G. Poesen, G. Koers and R. Vounckx, “Imaging in the millimeter wave domain: challenges and pitfalls,” in MPWI: Millimetre Wave Photonic Devices and Technologies for Wireless and Imaging Applications, 2005.

G. Poesen, G. Koers, J. Stiens, G. Carchon, W. De Raedt and R. Vounckx, “Opto Controlled RF Attenuator on High Resistivity Silicon,” in MPWI: Millimetre Wave Photonic Devices and Technologies for Wireless and Imaging Applications, 2005.

G. Poesen, G. Koers, J. Stiens, G. Carchon, W. De Raedt and R. Vounckx, “Opto Controlled Substrate Losses in a Coplanar Waveguide on HR-Si,” in IEEE MTT-S 2005 International Microwave Symposium, 2005.

2004

J. Stiens, “System and Method for Millimeter and Sub-Millimeter Wave Imaging,”, Aug. 2004.

G. Poesen, G. Koers, J. Raskin, I. Huynen, W. De Raedt, J. Stiens and R. Vounckx, “Models for opto-electronic controlled coplanar waveguides on high resistive BCB coated Si substrates technology up to 110 GHz,” in OPTICAL ARCHITECTURES FOR RF SIGNAL, PROCESSING AND SIGNAL MIXING, 2004.

2003

J. Stiens, “Low power drivers for liquid crystal display technologies,”, May. 2003.

2002

J. Stiens, “Device and Method for a Folded Transmissive Phase Retarder,”, May. 2002.

J. Stiens, “Low Power Drivers for Liquid Crystal Display Technologies,”, Sep. 2002.

J. Stiens, “Zero-Displacement Phase Retarder Device and Method,”, Jan. 2002.

J. Stiens, G. Shkerdin, V. Kotov, G. Borghs and R. Vounckx, “n-GaAs thermo-voltage detector for short and powerful CO2 laser pulses,” in Conference on Optoelectronic and Microelectronic Materials and Devices, 2002.

J. Stiens, V. Kotov, G. Shkerdin, G. Borghs and R. Vounckx, “Optical calibration of electron concentrations in heavily doped GaAs films,” in Conference on Optoelectronic and Microelectronic Materials and Devices, 2002.

2001

J. Stiens, “Low Power Line Switching Circuit, Device and Method,”, Mar. 2001.

J. Stiens, “Low Power Line Switching Circuit, Device and Method,”, Oct. 2001.

2000

J. Stiens, “Transmission-Mode Optical Coupling Mechanism and Method of Manufacturing the Same,”, Feb. 2000.

J. Genoe, D. Coppée, J. Stiens, R. Vounckx and M. Kuijk, “Numerical Calculation of the Evolution of the Carrier Distribution in the Spatially Modulated Light CMOS Detector,” in SAFE 2000, 2000.

V. Kotov, G. Shkerdin, J. Stiens and R. Vounckx, “Acousto-Optic cascade frequency shift of light: new opportunities in information processing,” EOS Topical Meetings Digest Series, Advances in Acousto-Optics, 2000.

1998

V. Kotov, G. Shkerdin, R. Vounckx and J. Stiens, “Coherent scattering of multi-component optical radiation on a single acoustic wave,” in ICONO, 1998.

1995

A. Voronko, G. Shkerdin, J. Stiens and R. Vounckx, “Non-Linear Transmission of Medium-Infrared Light through a Structure containing High Doped GaAs Layers,” in ICONO 95, 1995.

1993

J. Stiens, C. De Tandt, W. Ranson, R. Vounckx, I. Veretennicoff, G. Borghs and P. De Meester, “A resonant III-V semiconductor layer and a grating coupler integrated in a waveguide modulator for far-infrared light,” in Topical Meeting on Photonics in Switching 93 (abstract PTuD11), 1993.

1992

J. Stiens, R. Vounckx, A. Voronko and G. Shkerdin, “Integrated Mirror Optical Switch : Resonant semiconductor layer integrated in a far-infrared waveguide modulator,” in Topical Meeting on Photonic Switching (abstract 3B7), 1992.